Mine are always hammering the passenger footwell for the imaginary brake pedal, aswell as having each hand on a seat bolster on either side.
Oh and I get the "what are you tyrying to prove", nothing I really cant go any slower ffs. If it doesnt feel like their old peoples Honda Civic when going round a corner I'm going to fast, in reality I really cant go any slower or smoother, I drive like i'm on a driving test with them in the car !! Dont exactly want to have a wreck with the parents in the car do I !!!